EP2032864A1 - Scheibe und damit versehene schraubenverbindung - Google Patents
Scheibe und damit versehene schraubenverbindungInfo
- Publication number
- EP2032864A1 EP2032864A1 EP07786771A EP07786771A EP2032864A1 EP 2032864 A1 EP2032864 A1 EP 2032864A1 EP 07786771 A EP07786771 A EP 07786771A EP 07786771 A EP07786771 A EP 07786771A EP 2032864 A1 EP2032864 A1 EP 2032864A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- disc
- screw
- workpiece
- thickness
- sub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000283153 Cetacea Species 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/71—Rod side to plate or side
- Y10T403/7123—Traversed by connector
Definitions
- the invention relates to a disc for arrangement between a head of a screw and a workpiece in a screw connection, wherein the disc has a bore receiving the screw and is spatially deformed about at least one axis extending diametrically through the bore.
- the invention relates to a screw connection between a screw and a workpiece, wherein the screw has a shaft which is provided with a thread and at its free end facing away from the head of a hole-forming or -bohrende tip and at its end adjacent the head one unstretched shaft portion and wherein the workpiece consists of at least one and preferably consists of a plurality of thin plates.
- a known disc of the type mentioned for example, a corrugated washer, which is used in a screw connection to secure the screw against loosening and turning back.
- a corrugated washer consists of spring steel and is elastically deformed during the manufacture of the screw connection, ie when the screw is tightened. Due to the elastic deformation of the corrugated washer, the finished screw connection is biased by an effective spring force in the direction of the screw axis.
- shims are usually used, which have a defined thickness corresponding to the game to be compensated. Welusionn or the like. have only a small thickness and are therefore very limited suitable to be used in addition to their remindfitschommesfunktion even to a balance of game.
- a screw connection of the type mentioned is known from DE 197 18 712 C1.
- a similar screw connection is known from US 2,321, 379, in which case the screw but not a hole-forming or
- Drill tip but only has a slightly tapered shaft end.
- the workpiece consists of two thin plates, which are to be securely clamped against each other by means of the screw. Characterized in that between the head and the thread provided on the shaft, a thread-free shaft portion is formed which is equal to or may be slightly smaller than the thickness of the two thin plates to be joined together, the screw can be over-twisted after the final setting. A firm connection between the two thin plates forming the workpiece, without the screw still being able to loosen, can only be ensured if there is no play between the screw head and the workpiece.
- the workpiece thickness must correspond exactly to the length of the unthreaded shank portion or may be only slightly larger than the length of the unthreaded shank portion.
- the two thin plates are to be kept firmly pressed together in the fastened position. If one of the two thin plates is too thin or only one screw is available whose thread-free shank portion is too long for the existing workpiece thickness, there is clearance for which there is no compensation for such a screw connection.
- a lock washer like a corrugated washer would be limited because of their small thickness.
- EP 0 556 438 A1 describes a screw with an elastically deformable washer for producing a screw connection.
- the elastic restoring force of the disc is utilized for establishing a firm connection. Even with such a disc clearance compensation is limited.
- the object of the invention is to design a disc and a screw connection of the type mentioned above in such a way that its play can be compensated for in a larger range or that it ensures a safeguard against the screw loosening back.
- a disc of the type mentioned according to the invention that the disc is angled about the diametric axis, so that an angle vertex line is parallel to the axis and the angled disc a Insert thickness which is greater than the initial thickness of the disc, and that the disc is made of a material which is chosen so that the disc is not elastic in the manufacture of the screw connection, but plastically deformable.
- the whale about which the disc is angled is less than 180 ° and greater than or equal to 90 °, the disc according to the invention offers a compensating possibility for play, which vary within a considerable range can.
- the disc is annular, the disc can be easily from a washer or the like. only care must be taken that it consists of a suitably plastically deformable material. If, in a further embodiment of the disc according to the invention, the disc has the shape of a polygon, the disc can be produced in an equally simple manner, without starting from a flat, circular disc blank.
- the object is achieved by the invention in that between the head of the screw and the workpiece a disc is arranged according to one of claims 1 to 7 and that the length of the unthreaded shaft portion is smaller than the sum of Thickness of the workpiece and the insert thickness of the disc and substantially not less than the sum of the thickness of the workpiece and the initial thickness of the disc.
- the workpiece thickness can be smaller in a wide range than the length of the unthreaded shank portion. Nevertheless, a backlash-free solid connection between the screw head and the workpiece is achieved, because in the inventive choice of the length of the unthreaded shank portion is a sufficient play balance possibility in a wide play area available.
- the aforementioned backlash-free solid compound ensures the desired protection against loosening the screw back.
- the screw connection when the diameter of the unthreaded shank portion is at most equal to the core diameter of the thread, the screw connection can be easily made without wasting a portion of the force available for plastically deforming the disc to thread-free Shaft section to pull through a too narrow hole.
- the bore of the disc is adapted to the conical connection of the shank, at least in the unassembled state, the washer has essentially no axial clearance with respect to the unthreaded shank portion of the screw, even with a finished screw connection.
- FIG. 1 shows a disc blank for a disc according to the invention
- Fig. 3 shows the screw connection according to the invention in a state in which the disc is plastically deformed according to the invention
- the disc 4 is parallel to the axis 16 and further transverse to the diametral axis 16, in FIG both cases by a distance at least equal to an initial thickness D a of the disc 14, ie equal to the thickness D a of the disc blank 10.
- the disc 14 is annular, but angled about the diametral axis 16 by the angle ⁇ .
- the same disc 14 is also circular as a disc blank 10, but even. Instead of the circular ring shape, the disc may also be in the form of a central bore 12 Polygons have, so z. B.
- the thread 36 of the screw 30 is self-tapping or self-forming.
- the diameter D 9 (FIG. 2) of the unthreaded shank portion 40 in the embodiment described here is equal to the core diameter D * of the thread 36.
- the shank 32 of the screw 30 has a conical connection 33 on the head 34 of the screw 30.
- the bore 12 of the disc 14 is at least in the unassembled state adapted to the conical connection 33 of the shaft 32, as indicated in FIGS. 2-4, in which the conical connection 33 is received with play in the conical bore 12.
- the disc 14 is plastically deformed with increasing feed of the screw 30 in a flattening state and finally reaches the state shown in Fig. 3, in which the uppermost thread of the thread 36 down from the threaded hole in the workpiece 42 exits and is at the height of the underside of the thin plate 42 b. From this moment, the screw 30 can over-rotate, without any further feed in the direction of the axis 20 takes place.
- the plastic deformation of the disc 14 stops, which now maintains the state shown in Figs. 3 and 4.
- Fig. 3 shows the disc 14 in front view
- Fig. 4 shows the disc 14 in side view.
- the length L 9 of the unthreaded shaft portion 40 is made equal to the insert thickness D e of the angled disc 14 from the outset, the insert thickness D e , necessarily greater than the initial thickness D a of the disc 14. From a comparison of Figs. 2 and 3 it can be seen that the disc 14 could be compressed at a corresponding thickness Dw of the workpiece 42 to the thickness D a of the disc 14, in which case D a would be equal to D f . Expediently, however, D f should be greater than D a , so that in the compensation of the remaining between the bottom of the screw head 34 and the top of the workpiece 42 distance in the state in Fig. 3 with varying play more security is ensured.
- the angled disk 14 has been pressed flat relative to the state in FIG. 2 by the thickness D w of the workpiece 42.
- the thickness of the workpiece 42 thus determines the maximum deformation of the disc 14.
- the deformation can go so far that at the end the disc 14 has a thickness D f equal to the initial thickness D a , as stated above.
- D f is greater than D a .
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07786771T PL2032864T3 (pl) | 2006-06-26 | 2007-06-20 | Połączenie śrubowe pomiędzy śrubą i detalem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006029253A DE102006029253B3 (de) | 2006-06-26 | 2006-06-26 | Scheibe und damit versehene Schraubenverbindung |
PCT/EP2007/056119 WO2008000668A1 (de) | 2006-06-26 | 2007-06-20 | Scheibe und damit versehene schraubenverbindung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2032864A1 true EP2032864A1 (de) | 2009-03-11 |
EP2032864B1 EP2032864B1 (de) | 2018-05-02 |
Family
ID=38477367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07786771.1A Active EP2032864B1 (de) | 2006-06-26 | 2007-06-20 | Scheibe und damit versehene schraubenverbindung |
Country Status (8)
Country | Link |
---|---|
US (1) | US7955036B2 (de) |
EP (1) | EP2032864B1 (de) |
CA (1) | CA2642484C (de) |
DE (1) | DE102006029253B3 (de) |
DK (1) | DK2032864T3 (de) |
PL (1) | PL2032864T3 (de) |
TR (1) | TR201808017T4 (de) |
WO (1) | WO2008000668A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2934338B1 (fr) * | 2008-07-22 | 2013-01-11 | Saft Groupe Sa | Rondelle |
DE102011001564A1 (de) | 2011-03-25 | 2012-09-27 | Hugo Benzing Gmbh & Co. Kg | Schraube mit Aufdrehsicherung |
KR20140040814A (ko) * | 2011-06-15 | 2014-04-03 | 오글랜드 시스템 테크놀로지 에이에스 | 그레이팅 클램프 및 지지체에 그레이팅을 고정시키기 위한 방법 |
CN202418190U (zh) * | 2011-12-06 | 2012-09-05 | 兰州西脉记忆合金股份有限公司 | 自加压弹性垫圈 |
DE102011057014A1 (de) * | 2011-12-23 | 2013-06-27 | Sfs Intec Holding Ag | Verbindung von mindestens einem Bauteil aus Stahl mit einem Unterbau aus sprödem Material |
CA2861938A1 (en) * | 2012-01-20 | 2013-07-25 | Pem Management, Inc. | Dynamic mounting system for heat producing components |
JP2015038906A (ja) * | 2012-02-27 | 2015-02-26 | 株式会社東芝 | 電子機器、支持装置、取付構造 |
US9039745B2 (en) | 2012-04-26 | 2015-05-26 | Biomet Manufacturing, Llc | One-piece variable angle locking washer |
SE538991C2 (sv) | 2013-07-01 | 2017-03-14 | Nord-Lock Ab | Fästanordning innefattande fästelement och låsbricka |
US11458071B2 (en) | 2017-05-11 | 2022-10-04 | Scalpal Llc | Torque enhancer device for grasping and tooling, and assemblies and uses thereof |
US11969864B2 (en) | 2017-05-11 | 2024-04-30 | Scalpal Llc | Multi-tier torque enhancer driver and/or receiver and method of using same |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US454289A (en) * | 1891-06-16 | Washer | ||
US162386A (en) * | 1875-04-20 | Improvement in metallic washers | ||
US135809A (en) * | 1873-02-11 | Improvement in metallic washers | ||
US851606A (en) * | 1905-11-24 | 1907-04-23 | Moses Neiburger | Nut-lock. |
US2321379A (en) * | 1942-11-03 | 1943-06-08 | Emmet M Green | Combined screw and rivet |
JPS544462B2 (de) * | 1974-04-10 | 1979-03-07 | ||
GB1493220A (en) * | 1976-10-12 | 1977-11-30 | Pye Ltd | Screw or nut and a washer intended to be held captive thereon |
US4749322A (en) * | 1986-11-24 | 1988-06-07 | Illinois Tool Works Inc. | Aluminum roof panel fastener |
JP2505089B2 (ja) * | 1992-02-20 | 1996-06-05 | 勝美 池田 | 締結部材,締結用機械要素セット,締結用機械要素の結合方法 |
DE19718712C1 (de) * | 1997-05-02 | 1998-10-22 | Sfs Ind Holding Ag | Schraube zum Verbinden von dünnen Werkstücken |
US6957931B2 (en) * | 2003-07-14 | 2005-10-25 | Slater Bert W | Roof bolt bearing plate and method for an underground mine |
-
2006
- 2006-06-26 DE DE102006029253A patent/DE102006029253B3/de not_active Expired - Fee Related
-
2007
- 2007-06-20 TR TR2018/08017T patent/TR201808017T4/tr unknown
- 2007-06-20 US US12/304,161 patent/US7955036B2/en active Active
- 2007-06-20 CA CA2642484A patent/CA2642484C/en not_active Expired - Fee Related
- 2007-06-20 DK DK07786771.1T patent/DK2032864T3/en active
- 2007-06-20 WO PCT/EP2007/056119 patent/WO2008000668A1/de active Application Filing
- 2007-06-20 EP EP07786771.1A patent/EP2032864B1/de active Active
- 2007-06-20 PL PL07786771T patent/PL2032864T3/pl unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2008000668A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7955036B2 (en) | 2011-06-07 |
CA2642484A1 (en) | 2008-01-03 |
EP2032864B1 (de) | 2018-05-02 |
US20090196686A1 (en) | 2009-08-06 |
WO2008000668A1 (de) | 2008-01-03 |
DE102006029253B3 (de) | 2008-04-03 |
CA2642484C (en) | 2014-05-13 |
PL2032864T3 (pl) | 2018-09-28 |
TR201808017T4 (tr) | 2018-06-21 |
DK2032864T3 (en) | 2018-07-30 |
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